Critical severity · published Feb 25, 2026
CVE-2026-27577
n8n: Expression Sandbox Escape Leads to RCE
9.9
CVSS
10.7%
EPSS
No
On KEV
Description
n8n is an open source workflow automation platform. Prior to versions 2.10.1, 2.9.3, and 1.123.22, additional exploits in the expression evaluation of n8n have been identified and patched following CVE-2025-68613. An authenticated user with permission to create or modify workflows could abuse crafted expressions in workflow parameters to trigger unintended system command execution on the host running n8n. The issues have been fixed in n8n versions 2.10.1, 2.9.3, and 1.123.22. Users should upgrade to one of these versions or later to remediate all known vulnerabilities. If upgrading is not immediately possible, administrators should consider the following temporary mitigations. Limit workflow creation and editing permissions to fully trusted users only, and/or deploy n8n in a hardened environment with restricted operating system privileges and network access to reduce the impact of potential exploitation. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)10.7% · higher than 96% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N8
n8n · n8n-io
< 1.123.22; >= 2.0.0, < 2.9.3; >= 2.10.0, < 2.10.1 · source: vendor, NVD
In the news
VulnerabilityHigh
n8n Sandbox Escape Lets Workflow Editors Run OS Commands as the n8n Process
n8n has patched a high-severity expression-sandbox escape that could let an authenticated workflow editor execute operating-system commands on the server running the automation platform. Security Joes found the flaw while probing n8n's February fix for CVE-2026-27577 for another bypass. The affected ranges are &lt;2.31.5 and &gt;=2.32.0,&lt;2.32.1. n8n fixed the flaw in versions 2.31.5 and
Jul 27, 2026·The Hacker News
VulnerabilityCritical
Critical n8n Flaws Allow Remote Code Execution and Exposure of Stored Credentials
Cybersecurity researchers have disclosed details of two now-patched security flaws in the n8n workflow automation platform, including two critical bugs that could result in arbitrary command execution. The vulnerabilities are listed below - CVE-2026-27577 (CVSS score: 9.4) - Expression sandbox escape leading to remote code execution (RCE) CVE-2026-27493 (CVSS score: 9.5) - Unauthenticated
Mar 11, 2026·The Hacker News
Affected product
N8
n8n
n8n-io
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